Gluing mechanism



Nov. 3, 1931.

* J. ETTL 1,830,316

GLUING MECHANISM Filed Dec. 13. 1928 2 Sheets-Sheet 1 A TT ORNEY S.

Nov. 3, 1931. J. ETTL GLUING MECHANI SM Filed Dec. 13. 1928 2 Sheets-Sheet 2 25 i" ,6 5f Z6 QC- l 5 3 2;/ f #H vZ2 25 ik L l J i' I $1 a a4 J6 a 44 J2 2 62 f (4 V0 'Il ./7 721e /W/ f mm ff |529 Il. 4 63 J7 55 l I i A TTORNEYS.

Patented Nov. l3, 1931 UNITED srA-'rEsLPATENr OFFICE JOSEPH ETTI-L, OF ZPLAINFELD, NEW JERSEY, ABSIGNOB T0 POTDEV'IN MACHINE GOM- 4P ANY, OF BROOKLYN, NEW YORK, AYCOBPOBATION OF NEW 'YORK GLUING' MECHANIBI Application led December 13, 1988. Serial 1ro. 325,688.

This invention relates to an improvement parallelism with respect to the gluing roller, 10, thereby enabling the lue or paste coating to be instantly regulate to obtain perfect results. The regulating or adjustingvmechanism for the ductor roller is calibrated so that the ductor roller always may be brought back to an original position should it have been changed for any reason or other. It isa simple matter, therefore, at any time toy adjust the ductor roller so as to insure the proper application of the glue or paste to the material being handled.

A still further object of my invention is the provision of an apparatus of the character above indicated in which means are provided forxpreventing injury `to the rilachine, such as springing of the ductor roller due tov any foreign material entering'be4 tween the ductor roller and the gluing or pasting roller.

A still further object of my invention is the provision of a machinev of the general character above indicated wherein mechanism of. an limproved character is provided for the emptying of the glue or paste tank. Heretofore trouble has been experienced wi th the mechanism employed in that the valve or plunger which controls the discharge of the glue or'paste from the tank is located exterior'of the tank and for this reason if not e moved for long intervals .becomes coated with dry glue or paste, making it very difficult to unseat. The present invention provides a construc- I tion whereby the valve o'r plunger is always v 45 immersed in the glue or paste, as the case lmay be, and -for this lreason is always in a moist condition and when it is desired to empty theA tank there is no vdanger of the valve or plunger having become stuck due to drying of the glue or paste.

In the drawings accompanying this application,

Fig. 1 isa side elevational view of my improved mechanism;

Fig. 2 is a plan view;

Fig. 3 is a section on the line 3 3 of Fig. 2;

gig. 4 is a section onthe line 4-4 of Fig. v2; an

Fig. 5 is an enlarged view of the dial, etc. fof1 regulating the position Vof' the ductor ro er.

improved machine comprises side brackets 1 and 2 which mount the various rollers and other devices to be presently referred to. My machine, as is usual, also provides a table desi nated 3 along which the material to be glu or pasted is moved. 4 designates the glue or paste tank.

The side brackets 1 and 2 provide bearings for the gluing or pasting roller 7 feed rollers 8 and 9 and ductor roller 10. Thegluing roller 7 is mounted on a shaft l1 which shaft carries a gear 12 meshn with a pinion 13 in lturn mounted on a stud s aft 14 carrying the drivingl pulle 15.` This pulley is driven throug a be t for instance by an electric motor 16.

On the gluing roller shaft 11 is a small gear 18 which meshes with a gear 19 carried on a shaft 20 on which is mounted the adjustable ductor roller 10.

Referring to the drawings in detail, my

The gear 12 on the gluing roller shaft also meshes with two gears 21 and 22 for driving .ing bearings at each side of the machine,

these bearings being designaved 27, whereby the shaft 20 along with the ductor roller 10 A may be adjusted toward and away from the gluing roller 7. i

To the rear of the ductor roller is a shaft 28 extending transversely of the machine and mounted in suitable bearings 29. Pinned to each end of this shaft is a strap 30 having two downwardly extending arms 31 and 32,

these arms being spaced from eachother a' short distance as indicated at-33. Passing end of the shaft 28. By adjustment of the 'screws 34 and 35 the ductor roller 10 may be moved into desired position relatively to the gluing roller 7 and be brought into exact parallelism therewith. After the ductor roller has been moved to the approximately correct position relatively to the pasting roller the small screw 36 appearing below the adjusting. screws 34 and 35 is tightened up to jam the screws 34 and 35, whereby they are locked in place. v

While the adjustment possible by the screws 34 and 35 is approximately accurate a still further and liner adjustment is provided for. This adjusting mechanism comprises an adjusting rod 37 extending lengthvise of the machine. and plainly shown on ig. 1. v l

l his rod, that is to say the right hand end thereor` as viewed in Fig.1 passes through the long arm 32 of one strap 30 where it is provided with apin' 38 cooperating with a notch 39 cut'in the arm 32. To the right of the arm 32, that is on the projecting end of the rod 37 is a coil spring 40, one end of which .bears against the face of the arm 32 and the other end against a pin 41 which is carried by the rod 37.

The opposite end of the adjusting rod 37 passes through and projects from a fixed lbearing' 42,. its projecting end being thread-- ed as indicated at 43 and receiving an adjusting dial 44, the hub 45 of which bears against the'face off the bearing 42. At the back side of the bearing 42 I provide a coil spring 46 on the adjusting rod 37 one end of this spring bearing against the face of the bearing 42 its opposite end bearing against a washer 47 carried by the adjustinggrod and held against movement to the right as viewedin Fig. 1 by a pin 48.

The adjusting dial 44 is Icalibrated as shown at 49 and a spring pawl 50 is -provided for cooperating with small lugs 51 carried by the periphery of the dial. The pawl 50 and lugs 51 and calibrations 49 are provided :as a

convenient means for setting the dial in any desired position and to enable the dial to be readily'reset to that same position.

In operation after the ductor roller 10 'h as been set to its approximately correct position by the adjusting screws 34 and 35 the dial 44 is moved to bring the ductor roller into exactposition with respect to the pasting' roller, movement of the dial 44 retracting the adjusting rod 37, that is ,to say moving the rod to the left asA viewed in"Fig. 1 against the action of the spring 46, so that as the rod 37 is moved to the left the arm 32 is rocked to move the ductor roller Atoward the gluing roller.

I might say at this point that the spring 40 is of such a character that the ductor roller A may not be .moved with. excessive pressure against the plasting roller, the spring 40 yielding' before t any further rotation of the dial 44 causing the` pin 38 to move out of .the slot 49 in the arm 32 so that theI rod 37 will then rotate instead of beingretracted further until an excessive pressure is produced between the ductorroller and the gluing roller. This construction is of great importance in gluing is'pressure has been'reached and machines when `foreign materials enter the glue or paste. In machines as heretofore constructed the presence of such foreign materials frequently damaged the machine, these foreign materials passing `with the glue between the gluing roller and-the ductor roller causingv the ductor rollerto becomesprung,

necessitating replacement of the ductor roller with a new one. With the present arrangement by providing a spring 40 of proper tension it will be obvious that the ductor roller inthe event of foreign material entering between the gluing roller and the ductor roller will be free to move away from the ductor roller without any damage to the machine, against the action of the spring 40.

The spring 46 above mentibned will always maintain the hub of the dial 44 in proper engagement with the face o-the bearing 42. y y A It will be seen from the foregoing, therefore, that I have provided a gluing or pasting machine in which a very fine adjustment can be made of the ductor roller not only enabling the ductor roller to be properly adjustedv initially with respect to the pasting roller but enabling the ductor .roller always to' be restored to its original positionat any time desired. j Thisarrangement also provides for use of the ductor roller without damage to the mechanism of the machine in the event of foreign material entering or attempting to enter between the duct-or roller and thev pasting or gluing roller. thereby eliminating danger of springing of the ductor roller and conse-- quent necessity of renewal-thereof.

l Another feature provided by the present l invention is a construction wherein the glue or paste will be smoothly applied to the paper or other material lbeing operated upon. I

have already described the drive mechanism for the gluing roller 7 and ductor roller 10.

In thispconne'ction I wish to state that this gear drive provides for asurface speed of 'the result thatthe latter is applied to the 'material in an absolutely smooth condition.

'the ductor lroller much slower thanthe surv I might say to. further emphasize the importv, tendency of the ance of this feature of my invention that the lue or paste in prior machines is to buil up ridges on the coating applied to the paper or other material be? v ing operated upon due to the relative speeds at which in such machines the gluing roller and ductor roller are driven. With the difinvention I explained that the present machine provides for the quick discharge at all times of the glue or paste from the tank or reservoir containing the same. To this end mounted in the tank wall. The inner end ot' one wall of the tank 4 is provided with a discharge spout which may be screw-v this nozzle provides a discharge opening controlled by a valve or plunger 56 which is carried on `the inner end of a'stem 57 operable from the exterior of the tank by a hand in the'reservoir will keep the valve inv a moist condition to vpreventl the same from sticking. Various modifications ma be made in the construction above describe within the purview of this invention.

What I claim is In a gluing or pasting machine, the combination of a ductor roller thereto, 'an adjusting rod said strap and projecting t on the rejecting said a justin stop and sai strap, a calibrated member threaded on the opposite end of said shaft for moving said sha t lengthwise, a connection assing through erefrom, a stop end of said rod, a spring on between said strap and shaft for preventingA turning of the latter, said sprin cooperating with the strap and shaft to yiel upon redetermined movement of the shaft where y the 4latter is released for rotation and further.

longitudinal movement prevented.

This specification signed this `10 day of Dec., 1928.

JOSEPH ETTL.

Wheel 58. The plunger 56 is always in the l glue` in the reservoir and hence will always be in a most condition which will prevent drying of the glue or paste on the valve and what in effect would amount to a gluing or pasting of the valve in closed'position. This is the difficulty which has been experienced with existing valves for the same purpose. the valve becoming coated with glue or with paste, as the case may be, and when closed by reason of the valve being on the exterior of the reservoir this material hardened, making it very difficult toopen the vva-lve when desired. The present arrangement prevents this action taking place as will be understood.

The outer wall of the spout 55 is extended as indicated at 59 to provide a hook 60 from which may be suspended a bucket to catch the glue or paste being discharged' from the tank through the discharge spout. I also provide the hub of the hand wheel 58 with a pin 61 cooperating with a flange 62 on the projection 59 of the discharge nozzle and on the stem 57 I provide a'coil spring 63, the function of which is to hold the valve 'or plunger 56 in closed position normally. When it is desired to open this valve it is merely necessary. to push inwardly on the is turned to its original hand wheel 58. and give the same a partial turn until the pin 61 engages the rear face of the liange 62, whereupon the valve will vbe prevented from closing until the `hand wheel position to disengage pin'61 from ange 62.

This arrangement then provides avery simple construction by which the materiali-n the reservoir 4 can be discharged quickly, the valve controlling the discharge of this material being located fon the inside of the resera voirthereby insuring that the glue or 4 a strap connected rod and intermediate said 

